Vendor updates

vendor/google.golang.org/protobuf/internal/impl/codec_extension.go

@@ -21,26 +21,18 @@ type extensionFieldInfo struct {
 	validation          validationInfo
 }
 
-var legacyExtensionFieldInfoCache sync.Map // map[protoreflect.ExtensionType]*extensionFieldInfo
-
 func getExtensionFieldInfo(xt protoreflect.ExtensionType) *extensionFieldInfo {
 	if xi, ok := xt.(*ExtensionInfo); ok {
 		xi.lazyInit()
 		return xi.info
 	}
-	return legacyLoadExtensionFieldInfo(xt)
-}
-
-// legacyLoadExtensionFieldInfo dynamically loads a *ExtensionInfo for xt.
-func legacyLoadExtensionFieldInfo(xt protoreflect.ExtensionType) *extensionFieldInfo {
-	if xi, ok := legacyExtensionFieldInfoCache.Load(xt); ok {
-		return xi.(*extensionFieldInfo)
-	}
-	e := makeExtensionFieldInfo(xt.TypeDescriptor())
-	if e, ok := legacyMessageTypeCache.LoadOrStore(xt, e); ok {
-		return e.(*extensionFieldInfo)
-	}
-	return e
+	// Ideally we'd cache the resulting *extensionFieldInfo so we don't have to
+	// recompute this metadata repeatedly. But without support for something like
+	// weak references, such a cache would pin temporary values (like dynamic
+	// extension types, constructed for the duration of a user request) to the
+	// heap forever, causing memory usage of the cache to grow unbounded.
+	// See discussion in https://github.com/golang/protobuf/issues/1521.
+	return makeExtensionFieldInfo(xt.TypeDescriptor())
 }
 
 func makeExtensionFieldInfo(xd protoreflect.ExtensionDescriptor) *extensionFieldInfo {

vendor/google.golang.org/protobuf/internal/impl/codec_tables.go

@@ -197,7 +197,7 @@ func fieldCoder(fd protoreflect.FieldDescriptor, ft reflect.Type) (*MessageInfo,
 		return getMessageInfo(ft), makeMessageFieldCoder(fd, ft)
 	case fd.Kind() == protoreflect.GroupKind:
 		return getMessageInfo(ft), makeGroupFieldCoder(fd, ft)
-	case fd.Syntax() == protoreflect.Proto3 && fd.ContainingOneof() == nil:
+	case !fd.HasPresence() && fd.ContainingOneof() == nil:
 		// Populated oneof fields always encode even if set to the zero value,
 		// which normally are not encoded in proto3.
 		switch fd.Kind() {

vendor/google.golang.org/protobuf/internal/impl/message_reflect_field.go

@@ -538,6 +538,6 @@ func isZero(v reflect.Value) bool {
 		}
 		return true
 	default:
-		panic(&reflect.ValueError{"reflect.Value.IsZero", v.Kind()})
+		panic(&reflect.ValueError{Method: "reflect.Value.IsZero", Kind: v.Kind()})
 	}
 }